Hinge.



N. B. HURD. HINGE. APPLICATION r1150 APR. a, 1916.

Patented June 27, 1916.

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UNITED STATES PATENT OFFICE.

NORMAN CB. HURD, OF NEW BRITAIN, CONNECTICUT, assronon TO THE AMERICANHARDWARE CORPORATION, OF- NEW-BRITAIN, CONNECTICUT, A CORPORATION OFCONNECTICUT.

HINGE.

Specification of Letters Patent.

Patented June 27, 1916.

Application filed April 8, 1916. Serial No. 89,970.

generally and it has for its objects to provide simple and practicalmeans for retaining the hinge pintle in position and further to lock thepintle under certain conditions to prevent withdrawal of the same andconsequent separation of the hinge leaves.

' These objects I have accomplished by the provision of a holding pinmounted in one of the hinge leaves and yieldingly engaging over ashoulder on the pintle to prevent the pintle working loose and becomingdisengaged from the hinge leaves and by securing said pin in its holdingposition when the hinge occupies a given position, as for 1nstance whenthe door to which it is applied is closed. The means for securing thelocking pin in its holding position may consist according to thepreferred form of the invention of a member or cam-like portion on oneof the hinge leaves engaging over the exposed end portion of the lockingpin mounted in the other hinge leaf.

Various other features of the invention and details of construction willappear as the specification proceeds, attention being directed to theaccompanying drawing forming a part hereof wherein is illustrated thepreferred form of the invention.

In said drawing: Figure 1 is a face view of a hinge embodying theinvention. Fig. 2 is a horizontal sectional view of the same takensubstantially on the plane of the line 22 of Fig. 1, showing the hingeapplied to the mounting of a door with the door in the open position andshowing in dotted lines the locking pin in the retracted position aswhen the pintle is being withdrawn. Fig. 3 is a view similar to Fig. 2with the door in the closed position and the locking device actuated tolock the hinge pintle in position. Fig. 4 is a fragmentary partiallytransparent View illustrating the several parts of the locking device.

The two members or leaves of the hinge are designated 7 and 8, theseleaves being shown provided with knuckles 9 and 10 to receive the hingepin or pintle 11.

The locking device of this invention is in the form of a pin 12 mountedin a seat 13 provided in a knuckle of one of the hinge leaves andprojecting inwardly through a passage 14 into position to engage ashoulder 15 on the pintle. The locking shoulder on the pintle may beprovided by simply forming an annular groove as indicated at 16,partially or entirely surrounding the pintle the lower wall of saidgroove then providing the locking shoulder described. The locking pin isnormally yieldingly pressed inward into engagement over the lockingshoulder by a spring 17 coiled about the pin and engaging between ashoulder 18 adjacent the inner end of the pin and the shoulder providedby the plug 19 mounted in the outer end of the seat 13. The plug 19 maybe formed as a screw plug closing the outer end of the seat or cavity inwhich the locking pin is mounted and may be provided with a centralpassage 20 therethrough through which the outer end of the pin projectsand is guided thereby.

As clearly shown in Fig. 2, in the normal open position of the hinge thelocking pin is forced yieldingly inward into engagement over the lockingshoulder on the pintle and the pintle is thereby yieldingly secured inthis position coupling the two hinge leaves together. When however thehinge is closed as indicated in Fig. 3, or moved to any other positionin which the parts are designed to lock the holding pin, the holding pinis positively locked in its holding engagement with the pintle by acam-like holding portion 21 on the second hinge leaf engaging over theexposed end of the locking pin as indicated in Fig. 3. Under theseconditions the locking pin is held in its inwardly projected position inengagement with the pintle and it is therefore under such circumstancesimpossible to withdraw the pintle. Before therefore the pintle can bewithdrawn the hinge must be opened or moved to a position where thelocking cam 21 no longer overlies the projecting end of the locking pin.

To prevent loss or displacement of the locking pin when the hinge pintleis withdrawn, the shoulder 18 on said pin, against which the inner endof the spring bears may be formed as an outstanding collar as 7indicated, arranged by engagement with the inner end of the seat orcavity 13 to limit the inward movement of the locking pin.

This construction it will be seen prevents the spring from thrusting thelocking pin inward into the hinge pin bore 23 when the hinge pin iswithdrawn.

From the foregoing it will be apparent that my invention. provides asimple and very effective means for securing and locking the hingepintle and that the construction is one which can be inexpensivelymanufactured IVhat I claim is:

1. In a hinge construction, hinge leaves, a hinge pintle pivotallyconnecting said leaves, a locking pin yieldingly engaging said pintle tonormally yieldingly secure said pintle and means adapted in apredetermined position of the hinge leaves to hold said locking pin inlocking engagement with the pintle.

2, In a hinge construction, hinge leaves, a pintle connecting said hingeleaves provided with a locking shoulder, a locking pin mounted in one ofthe hinge leaves and projecting inwardly into engagement with theshoulder on the pintle, a spring normally holding said locking pinyieldingly engaged Genie: of this patent may be obtained for five centseach, by addressing the with said locking shoulder and a projection onone of the hinge leaves engaging over the outer end of said locking pinin a predetermined position of the hinge leaves.

3. In a hinge construction, hinge leaves having registering knuckleswith a bore therethrough one of said knuckles having a seat in one sidethereof and a passage extending from said seat inwardly into the bore, alocking pin extending through said passage into the bore and providedwith an outstanding shoulder received in said seat and limiting theinward movements of said pin, a spring engaging said shoulder tonormally thrust the locking pin inward, a plug closing the outer end ofsaid seat and provided with an opening for receiving and guiding theouter portion of the pin, a spring coiled about the locking pin andengaging between the shoulder thereon and the inner side of said plugand apintle seated in the bore in the registering knuckles and providedwith a shoulder engaged bytheinner end of the locking pin.

NORMAN B. HURD.

Wuhington, ID. 0.

"Commissioner of Patents,-

